Category:Telephony signals

• Signaling (telecommunications)

2

• 2600 hertz

A

• Analog display services interface
• Automatic number announcement circuit
• Automatic number identification

B

• Bearer channel
• Busy signal

C

• Call-progress tone
• Camp-on busy signal
• Common-channel signaling

D

• Dial tone
• Differential pulse-code modulation
• Digital milliwatt
• Digital Private Network Signalling System
• DTMF signaling

E

• E and M signaling

G

• Ground start
• Guard tone

H

• Hook flash

I

• In-band signaling

L

• Line signaling
• Loop start

M

• Multi-frequency receiver
• Multi-frequency signaling
• Multiple frequency-shift keying

O

• Off-hook tone
• On- and off-hook
• On-hook
• One-way trunk

P

• Permanent signal
• Precise tone plan
• Proceed-to-select
• Pulse dialing

Q

• Quindar tones

R

• Recorder warning tone
• Register signaling
• Reorder tone
• Ringing tone
• Ringtone
• Robbed-bit signaling
• Rotary dial

S

• Sender (telephony)
• Separate-channel signaling
• Signaling protocol
• Signalling System No. 7
• Signalling System R2
• Simplex signaling
• Single-frequency signaling
• Special information tone
• Superframe

T

• Telephone hook
• TeleZapper
• Template:Telsigs
• Two-out-of-five code

W

• Wink pulsing

Z

• Zip tone